Cybersecurity Unit 4 - Cryptography & Linux

A single on/off or 0/1 in a computer's transistor is known as a:

• a) bit

• b) byte

• c) nibble

• d) hex

Which of the following is not a measure of the number of bytes in a computer?

• a) Zilobyte

• b) Kilobyte

• c) Megabyte

• d) Terabyte

The system which represents alpha-numeric data in a computer, such as A = 65 = 01000001 is called:

• a) ASCII

• b) Translator

• c) AARP

• d) NROTC

Which of the following is the base 16 number system?

• a) Hexadecimal

• b) Binary

• c) Decimal

• d) Octal

Representing a range of characters by some kind of conversion system, like ASCII, is called:

• a) Encoding

• b) Encrochment

• c) Encryption

• d) Translation

CTF stands for:

• a) Capture the Flag

• b) Coding to Find

• c) Cyber Text Foundation

• d) Cybersecurity Team Fun

How many bits are there in a byte?

• a) 8

• b) 2

• c) 4

• d) 6

Scrambling data so that it is unreadable to anyone except those who know the trick to decoding it is...

• a) Cryptography

• b) Cybersecurity

• c) Coding

• d) Hieroglyphics

The data that has been encrypted is called...

• a) Ciphertext

• b) Algorithm

• c) Plaintext

• d) Code

This is a method of encryption in which the order of the letters is changed. Scytale cipher, in which a ribbon is wrapped around a cylinder, is an example.

• a) Transposition

• b) Substitution

• c) Hieroglyphics

• d) Graphics